Cylindrical sector-shaped tearable wrapping or package, particularly for cheese portions, and blank for forming such wrapping or package



J. BAUR 3,412,927

TEARABLE WRAPPING OR PACKAGE,

Nov. 26, 1968 AND BLANK FOR E G A K C A s w R N O H mm m w P P mm 8 m mw E W J E P H A W C W H U1 wn 0 F R G w m V. C M E L R S M Q L L F A U CC I R T D R A N I P L Y C m m K N I Jakob BRUR- E M United States Patent3,412,927 CYLINDRICAL SECTOR-SHAPED TEARABLE WRAPPING 0R PACKAGE,PARTICULARLY FOR CHEESE PORTIONS, AND BLANK FOR FORMING SUCH WRAPPING ORPACKAGE Jakob Baur, Thun, Bern, Switzerland, assiguor to Gerberkase AG,Thun, Switzerland, a company limited by shares of Switzerland Filed June13, 1966, Ser. No. 557,131 Claims priority, application Switzerland,July 23, 1965, 10,392/ 65 Claims. (Cl. 229-87) ABSTRACT OF THEDISCLOSURE An improved substantially circular cylindrical sectorshapedtearable wrapping or package for an article or commodity such as acheese portion, and an improved blank for fabricating such a package.The blank has one panel substantially in the form of a sector of acircle, a second panel forming the outer arcuate or cylindrical wallsurface of the package and side panels for forming the side walls of thepackage. A cover sheet or foil forms the remaining surface and is alsosubstantially in the form of a sector of a circle. Two tear stripsextending approximately along the straight side edges of one of thesector-shaped sides are included. The tear strips have portionsextending past their point of intersection.

The present invention has reference to an improved substantiallycircular cylindrical sector-shaped tearable wrapping or package for anarticle or commodity, especially for cheese portions, and to an improvedblank for fabricating such package. The inventive package or wrappingcomprises an article-wrapping or enclosure sheet incorporating a blankhaving one panel substantially in the form of a sector of a circle, afurther panel forming the outer arcuate or cylindrical wall surface ofthe circular cylindrical sector-shaped pack-age as well as side panelsfor forming the side walls of the aforesaid package. Additionally, suchpackage also has a cover sheet or foil forming the other surface whichis likewise substantially in the form of a sector of a circle. Althoughfor illustrative purposes the invention will hereinafter be describedwith regard to packaging of cheese portions, obviously it could also beemployed in conjunction with other type articles or commodities.

Tearable packages of the aforementioned type are already known to theart, yet possess the drawback that when tearing open the package therecould only be formed one slot-shaped opening substantially correspondingto the width of a tear strip. Consequently, the freeing or exposing ofthe entire package contents essentially had to be undertaken manually.This disadvantage was attempted to be overcome through the provision ofa tear flap at the cover foil or sheet. However, the desired effect,namely re moval of the entire cover sheet, could only then be realizedif this cover sheet was produced from a particularly strong or thickfoil. Only in this manner was is possible to prevent tearing of therelevant cover sheet. Tearable packages of this type are expensivesince, apart from the cost of the thicker or additional coat or layeredfoil, considerable waste was produced during manufacture of the coversheet together with the tear flap.

Accordingly, it is a primary object of the present invention to providean improved tearable package or wrapping for commodities which overcomesthe aforementioned d-rawbacks of the prior art packages.

Another more specific object of this invention is directed to thefabrication of a tearable package of the men- 3,412,927 Patented Nov.26, I968 tioned type which, without appreciable increase in price,enables removal of at least one wall or surface of the package which issubstantially in the form of a sector of a circle together with theadjoining outer package surface or wall by carrying out a single tearmovement.

Still a further significant object of this invention is directed to theprovision of an improved blank for forming a tearable wrapping orpack-age for commodities, wherein the packaged commodity can besubstantially exposed by a single tear movement, so that it can beeasily removed from the package, if desired, and then without soilingthe hands or contact-ing the package contents.

Yet a further noteworthy object of this invention has reference to animproved tearable wrapping or package for articles which enables openingof the package by tear means in a manner that contact with the packagecontents is positively avoided.

The inventive tearable package or wrapping is generally characterized bythe features of two tear strips extending approximately along thestraight side edges of the one package surface substantially in the formof a sector of a circle and which strips have portions extending pasttheir point of intersection.

The blank used for forming the inventive package comprises a sheet ofmaterial having a first panel substantially in the form of a sector of acircle, a second panel connected along a fold line with the first paneland having the form of an arc-shaped cylindrical surface portion, arespective side panel connected along a fold line with each laterallyextending straight edge of the first panel, and a pair of tear stripsextending at least approximately along the vicinity of the straightlateral edge of the first panel, such tear strips intersecting at apoint and including portions extending past said point of intersection.

Other features, objects and advantages of the invention will becomeapparent by reference to the following detailed description and drawingin which:

FIGURE 1 is a top plan view of a preferred embodiment of unfolded blankor enclosure sheet used for forming the inventive tearable package orWrapping;

FIGURE 2 depicts in perspective view the blank of FIGURE 1, partiallyfolded, as well as the cover sheet or foil, the cheese portion beingomitted to preserve clarity in illustration;

FIGURE 3 is a perspective view of a packaged cheese portion wrapped bymeans of the blank of FIGURE 1; and

FIGURE 4 is a perspective view showing the tearable package torn open toexpose its contents.

Describing now the drawing, the inventive blank or enclosure sheet 1 forforming the inventive tearable package essentially comprises four mainpanels 25. The panel 2 is substantially in the form of a sector of acircle and serves to cover the correspondingly-shaped surface of asubstantially circular cylindrical sector-shaped cheese portion 6. Theside panels 3 and 4 extend along the straight lateral edges of the panel2 at the region of the respective fold lines 20, shown in phantom, andthey bear against the side surfaces of this cheese portion.Additionally, the panel 5 adjoins the panel 2 along the fold line 21 andbears against the outer substantially cylindrical arc-shaped wall of thecheese portion 6. The described panels 3, 4 and 5 are advantageouslywider than the height of the cheese portion by the amount of theirassociated marginal edges or panels 13, 14 and 15 respectively, theselatter panels being folded onto one of the sector-shaped surfaces of thecheese portion 6, as best shown in FIGURES 2 and 3.

Between the panels 3 to 5 there are provided further, essentiallytriangular, intermediate panels 7 to 9. As will be described shortly,these inter-mediate panels 7 to 9, upon folding of the blank 1, formtabs or flaps 7a, 8a and 9a respectively which are to be folded onto theside surfaces 3a, 4a or the outer surface 5a of the package 6, asclearly shown in FIGURES 2 and 3. Essentially along the straight edgesof the panel 2, near the fold lines 20, there are two tear strips and 11which are connected in any suitable manner with the body of the blank orenclosure sheet 1, for instance are adhesively bonded thereto. The:etear strips 10 and 11 intersect at location or point 12 (FIGURE 1) andextend past such point of intersection, the strip ends 10a and 11apreferably projecting past the marginal edge of the blank or enclosuresheet 1. The other ends 10b and 11b of these tear strips 10 and 11respectively, extend along the lateral edges of the panel 5 near thefold lines 22, reaching up to the associated marginal panel portion 15.The previously mentioned cover foil or sheet 16 has a form anddimensions which at least essentially correspond to that of one of thesector-shaped surfaces of the package.

Packaging of the goods, in this case the cheese portion 6, takes placeas follows: Initially the blank or enclosure sheet 1 is folded so itpossesses an appropriate form, specifically in that the panels 3 to 5are folded along their fold or parting lines 20, 21 with respect to thepanel 2, and erected in the manner shown in FIGURE 2. The intermediatepanels 7, 8 and 9 thereby form laterally protruding flaps or tabs 7a, 8aand 9a respectively. The thus erected blank 1 now forms a container orreceptacle into which the fluid cheese mass may be poured. Afterpouring, the cover sheet or foil 16 is applied and the panels 13, 14 and15 projecting past such cover sheet 16 are folded onto the latter alongtheir fold lines 23, 24 and 25 and adhesively connected therewith. Afterthe tabs or fiaps 7a to 9a are folded onto the side walls or panels 3a,4a and/ or the outer arcuate wall or panel 5a, the package in completed.The tab or flap 8a formed at the edge or line of intersection of theside walls 3a and 4a contains the ends 10a and 11a of the tear strips 10and 11 respectively, these ends protruding past the point ofintersection 12 of such strips. In this finished package, the panel 2forms the upper package surface 20 substantially in the form of a sectorof a circle; the panel 5 the arc-shaped outer wall 5a; the side panels 3and 4 the side walls 3a and 4a of the package; and the cover sheet orfoil 16 the underside or face 16a of the package, whereas the tear stripends 10b and 11b are folded over the neighboring edge of this coversheet 16.

Considering now the completed package of FIGURE 3, if the ends 10a and11a of the tear strips 10 and 11 eventually together with the tab 8a areseized, then the folded blank or enclosure sheet 1 tears along thestraight edges of the upper surface 2a, so that the entire upper surfaceof the cheese portion 6 is exposed. Upon continuing the tearing movementalso the curved or arched outer wall 5a and finally also the underface16a of the package will be torn away, so that essentially there onlystill remain both side walls 3a, 4a of the package.

In this manner it is possible, with a single tearing movement, to exposethree surfaces of the cheese portion, and without having had to resortto measures which would have resulted in appreciable increase in thecost of production.

What is claimed is:

1. A tearable package of substantially circular cylindrical sectorshape, for the packaging of correspondingly-shaped articles,particularly cheese portions, comprising an enclosure sheet having onepanel substantially in the form of a sector of a circle for covering onecorresponding sector-shaped surface of the article, a panel for coveringthe outer substantially cylindrical arc-shaped surface of the article,and side panels for covering the side surfaces of said article, a coversheet for covering the other surface of the article which is alsosubstantially in the form of a sector of a circle, and two tear stripson said one panel extending at least approximately along the straightlateral edges thereof, said two-tear strips being disposed to intersectone another and extending past their point of intersection.

2. A tearable package as defined in claim 1, wherein said two tearstrips extend past said panel covering the subtantially cylidndricalarc-shaped surface of the article.

3. A tearable package as defined in claim. 2, wherein said two tearstrips extend at least up to said cover sheet which covers said otherarticle surface also in the form of a sector of a circle.

4. A tearable package as defined in claim 1, wherein said two tearstrips intersect at a point remote from said panel covering the outersubstantially cylindrical arc-shaped surface of the article.

5. A blank for wrapping a substantially cylindrical, sector-shapedarticle, particularly for packaging correspondingly-shaped cheeseportions, comprising a sheet of material having a first panelsubstantially in the form of a sector of a circle, a second panelhingedly connected along a fold line with said first panel and havingthe form of an outer cylindrical surface portion, a respective sidepanel connected along a fold line with each laterally extending edge ofsaid first panel, a pair of tear strips on said first panel extending atleast approximately along the vicinity of said lateral edges of saidfirst panel, said two tear strips intersecting at a point and includingportions extending past said point of intersection.

6. A blank as defined in claim 5, wherein said portions of said two tearstrips extending past said point of intersection each extend along anedge of one of said side panels.

7. A blank as defined in claim 6, wherein each of said tear stripsextends along an edge of one side panelv at the region of said straightlateral edge of said first panel whereas said portion of the same tearstrip which extends past said point of intersection extends along anedge of the other of said side panels.

8. A blank as defined in claim 5, said two tear strips extending atleast up to the outermost extremity of said second panel.

9. A blank as defined in claim 8, said two tear strips extending pastsaid second panel.

10. A blank as defined in claim 6, further including a respectivemarginal panel externally bounding said second panel and each of saidside panels.

References Cited UNITED STATES PATENTS 2,021,860 11/1935 Kelley 229-513,268,105 8/1966 Geiger 229-51

